The article speculates on why Apple integrates the SSD controller onto the SOC for their A and M series chips, but misses one big reason, data integrity.
About a decade and a half ago, Apple paid half a billion dollars to acquire the patents of a company making enterprise SSD controllers.
> Anobit appears to be applying a lot of signal processing techniques in addition to ECC to address the issue of NAND reliability and data retention. In its patents there are mentions of periodically refreshing cells whose voltages may have drifted, exploiting some of the behaviors of adjacent cells and generally trying to deal with the things that happen to NAND once it's been worn considerably.
Through all of these efforts, Anobit is promising significant improvements in NAND longevity and reliability.
https://www.anandtech.com/show/5258/apple-acquires-anobit-br...
replies(6):